A sign touting a healthy exercise alternative seen in a shop window at Yamba. For people who don't like gyms

A sign touting a healthy exercise alternative seen in a shop window at Yamba, February 2012

Photo of a woman using a Pilates machine in the Virgin gym at Brightwater Commons, Randburg, Johannesburg, South Africa

Photo of a woman using a Pilates machine in the Virgin gym at Brightwater Commons, Randburg, Johannesburg, South Africa in February 2015

Les Mills body gym advert in Wellington, New Zealand. Shred summer 2017

Les Mills body gym advert in Wellington, New Zealand in January 2017. Shred summer 2017

Night gym sign with a sexy woman with her legs apart for a strip club in Prague, Czech Republic

Night gym sign with a sexy woman with her legs apart for a strip club in Prague, Czech Republic in February 2014

Photo in the window of healthy Fit Gym. A black female athlete doing a pushup in Fitzroy, Melbourne, Victoria

Photo in the window of healthy Fit Gym. A black female athlete doing a pushup in Fitzroy, Melbourne, Victoria in November 2016

A gym in Singapore

A gym in Singapore in February 2014

Picture of a gym in a gym window in Brunswick Street, North Fitzroy, Melbourne. Live strong train strong

Picture of a gym in a gym window in Brunswick Street, North Fitzroy, Melbourne in December 2014. Live strong train strong

Sign in a gym window in Brunswick Street, North Fitzroy, Melbourne. Healthy fit, live fit - live life. Dreams don't work unless you do

Sign in a gym window in Brunswick Street, North Fitzroy, Melbourne in December 2014. Healthy fit, live fit - live life. Dreams don't work unless you do

Exercise balls in a gym in Kuala Lumpur, Malaysia

Exercise balls in a gym in Kuala Lumpur, Malaysia in September 2012

Zap Fitness 24/7 sign in Hobart

Zap Fitness 24/7 sign in Hobart in May 2013

Feel Good female fitness gym in Hobart

Feel Good female fitness gym in Hobart in May 2013

Pappy's gym at Innisfail, Queensland

Pappy's gym at Innisfail, Queensland in June 2013

Les Mills gym in Christchurch

Les Mills gym in Christchurch, New Zealand in November 2010

Fitness First gym in Thailand

Fitness First advert at the Mall in Nakhon Ratchasima (Khorat), Thailand in September 2012

One very fit woman

Ad for fitness training in Melbourne in September 2012

Thai body builder

Body builder advertising supplements (Proflex) in Chiang Mai, Thailand in September 2012

Muscle bound!

Sign for a gym on Ya Min Gyi Street in Yangon, Burma in August 2010. The bodybuilder looks like he has been skinned by a predator!

Gym men

Advert for a gym in Silom, Bangkok, in December 2009

Working out

Man using gym equipment in Lumphini Park,Bangkok, Thailand in June 2011

Punch gym

A gym in Randwick, Sydney in March 2011. Interesting. Love the sign "punch equipment tested on humans!"